(19)

(11)

EP 1 631 152 A2

(12)

(88) Date of publication A3: 04.11.2004 (43) Date of publication: 08.03.2006 Bulletin 2006/10 (21) Application number: 04757998.2 (22) Date of filing: 19.03.2004

(51) International Patent Classification (IPC):  A23G 1/22(1968.09) A23G 3/16(1968.09) B21C 3/00(1968.09) B23B 23/00(1968.09) A23G 3/12(1968.09) A23P 1/00(1968.09) B23B 19/00(1968.09) B23B 3/10(1968.09) (86) International application number: PCT/US2004/008693 (87) International publication number: WO 2004/086554 (07.10.2004 Gazette 2004/41)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 20.03.2003 US 393295 (71) Applicant: NxStage Medical, Inc. Lawrence, MA 01843 (US)	(72) Inventor: STILLIG, Martin 37127 Dransfeld (DE) (74) Representative: Viering, Jentschura & Partner  Steinsdorfstrasse 6 80538 München 80538 München (DE)